Electronics and Communication Engineering - Communication Systems
Exercise : Communication Systems - Section 2
- Communication Systems - Section 13
- Communication Systems - Section 25
- Communication Systems - Section 24
- Communication Systems - Section 23
- Communication Systems - Section 22
- Communication Systems - Section 21
- Communication Systems - Section 20
- Communication Systems - Section 19
- Communication Systems - Section 18
- Communication Systems - Section 17
- Communication Systems - Section 16
- Communication Systems - Section 15
- Communication Systems - Section 14
- Communication Systems - Section 1
- Communication Systems - Section 12
- Communication Systems - Section 11
- Communication Systems - Section 10
- Communication Systems - Section 9
- Communication Systems - Section 8
- Communication Systems - Section 7
- Communication Systems - Section 6
- Communication Systems - Section 5
- Communication Systems - Section 4
- Communication Systems - Section 3
- Communication Systems - Section 2
46.
The Hilbert transform of cos ω1t + sin ω2t is
Answer: Option
Explanation:
J[s(t)] = s(t + 90°).
47.
In ionosphere incidence angle is 60°. The maximum usable frequency fm is equal to
Answer: Option
Explanation:
.
48.
The generally used value of EHV supply in TV receivers is
Answer: Option
Explanation:
It is 1 kV per diagonal inch.
49.
The number of channels available in MF band (300 kHz - 3 MHz) for AM modulating signal of 20 kHz is
Answer: Option
Explanation:
In MF band, frequency space available
= 3000 - 300 
2700 kHz
when AM is used Bandwidth of each channel.
= 2 x 20 kHz = 40 kHz
.
50.
The function of blend control in stereo system is
Answer: Option
Explanation:
Dilution of the effect of any channel to give balanced output from left and right channels is called blind control.
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